Latch and dogging means therefor



Oct. 16, 1928. 1,687,926

H. BROOMHALL LATCH AND DOGGING MEANS THEREFOR Filed April 25, 1926 Fly5. E]

/0 1,07, .T, F E /1 i g snow-Moi Patented Oct. 16, 1928 UNITED STATESPATENT ioFFloE.

HARLEY BROOMHALL, 0F SHELBY, OHIO, ASSIGNOR TO THE SHELBY METAL PROD-UCTS COMPANY, OF SHELBY, OHIO, A CORPORATION OF OHIO LATCH AND DOGGINGMEANS THEREFOR.

Application filed April 23, 1926. Serial No. 104,134.

This invention relates to improvements in means for dogging a door latchor the like.

The primary object of the invention is to provide means forautomatically maintaining the latch under tension in yielding operativeposition, for positively and constantly maintaining the latch in fixedoperative position and positively and constantly maintaining the latchin fixed operative position at the will of the operator, by themanipulation and adjustment of one unit of the means.

Another object of the invention is to provide a means for dogging a doorlatch which can be applied to the side or end of the body of the doorlatch, thereby leaving theface of the latch free from any interferencewith the operation of the latch and presenting a smooth surface forfinishing purposes.

Another object is to construct a dogging member of sheet metal or thelike which is adapted to be used and operated in cooperation with alatch mechanism constructed of sheet metal, to provide a complete latchand latch mechanism that is simple in operation 7 and construction,thereby saving labor and material and providing smooth and polishedsurfaces of the parts for finishing purposes.

Further objects are to provide means for using the same tension mean-s,that maintains the latch mechanism in yielding position, for the purposeof forcing and holding dogging member in close contact with the-body ofthe latch, to prevent play between the parts, to providemeans forguiding the dog ging member when it is being adjusted to differentpositions and for supporting it within the body.

These and otherobject-s are attained by the mechanism illustrated in theaccompanying drawing in which Figure 1 is a bottom plan view of thelatch and dogging mechanism showing the yielding operative positionofthe latch in full lines and the dogged position of the latch in dottedlines.

Figure 2 is a bottom plan view of the latch and dogging mechanismshowing the latch positively and constantly held in fastened position bythe dogging mechanism.

Figure 3 is a sectional view of Figure 2,

taken'on the line 11 of Figure 2. V Figure 4 is an end view of Figure 1taken on the line 83.

- Figure 5 is a sectional view of Figure -1 taken on the line 22.

Figure 6 is an end view of Figure l with the button and pin removed tomore clearly show the relation of the slots'in the casing and latchmechanism, that is the subject matter of an application filed in thePatent Oflice on April 14, 1926, bearing Serial-No. 101,901 and to whichreferencei-s made for the specific description of same. 7

In this application the latch mechanism of the above identifiedapplication will be described more or less generically in connectionwith a dogging mechanism which isassociated therewith and is the subjectmatter of this application. 1 1

The latch mechanism is enclosed, except at the bottom, in a hollow-bodycomprising'a top 1 having side members 2, 3, 4 and 5 made integraltherewith, The side members 4 and 5 are provided with integral flanges 6and 7 having apertures 8-8 formed therein'to receive screws or the like,to. fasten the body to a door or the like. The flanged members 6 and 7are preferably turned at right angles at their edges as shown at 9 and10. The complete body as describedis constructed and pressed to formfrom an integral piece. of sheet metal.

The top portion 10f thebody is provided stop to limitthe slidingmovement of the latch member in'both directions.

A square aperture 15 is provided in the side portion 2 of the body toreceive for sliding movement, thelatch 16 of the latch member 13.A'U-shaped camjmember 17 is-mounted to pivot in the casing immediatelyadjacent.

member forming the ends of the slot 14 contact with the annular rib 12and provides a the latch member 13 and is normally positioned thereon asshown in Figure 1 in full lines to lie in contact with the upturnedportion 18 of the latch member; 'VVhen positioned as shown in dottedlines in Figure 1 the latch 16. ofthe latch mechanism 13 is in yieldingdogged position. I

The cam member is connected to one end of a stud shaft 19 for pivotalmovement and is fastened thereto by riveting as shown at 20. The latchmember 13 it will be observed is movably held in position between theportion 1 of :the body and the cam member 1'7.

"The free end of the stud shaft 19 isprovided with a lever 21. Whenmovement is imparted :to the lever 21 in either direction by the ends 22or 23 of the cam member, the latch of the latch member is forced toinoperative position as shown by dotted lines in Figure 1..Asconventional stril-ze is a )Clated with the latch when the latch isactuated to operative position.

The latch" mechanism her "n des ibed briefly is the subiect ma ter ofthe perig application herein identified. It is ClQSCllUQCl herein toshow the preferred latch mechanism to whichthe present invention isapplied;

Toprovide a dogging means for the late-h mechanism a slot -25 and anaperture are formed in the side 3 of-thc bony. A sliding dogging member27 having a right angle projecting portion 28 ext-ending horizontallytherefrom at one end and-another similar portion 29 extendinghorizontally from the other end is provided. The free end of the portion29 is bent laterally to form a contact member substantially U-sha-pedwith a portion thereof, presenting a flat surface 29 Theprojecting,portions 28 and .29 are cut away at-30 and 31 to provideclearance for the latch member to slide underneath the pro jectingportions of-the dogging member when the latch is moved to unfastenedposition.

The dogging iii-ember 27 is also provided wit-ha-slot 32 and an aperture33.

align the projecting portion of the dogging mernber'with-t he slot andopening in the in contact with the side 3. To provide means for slidingthe dogging member 27 back and forth manually, a button 3 1 is providedhaving a collar 35 to press against the dogging member 27.. The buttonis provided with a shank 36. v

The shank 36 of the button is passed- :ation of the button 34in eitherdirection i1npartsmovement'to the sliding dogging'mem is provided.

The U- shaped end of the latch member also serves to her for positioningsame for'the purpose in tended. To hold the latch in normal or yieldingoperative position the foll'owingrel'ement-s are employed: A pin 37having a collar 38 One end of the pin is passed throughthe slot 32 inthe doggingmem her and inserted in the aperture 26 formed in the side 3of the body.

The opposite end of the pin is inserted in I an aperture 39 formed inthe upstanding portion 18 of :thelatch member. The aper ture 39 ispreferably made larger than the pin, to permit e-ihc-i'ency andconvenience in inserting the end of the pin in the aperture 26 of theside 3 and of the upturned p'ortien of the latch member 18. The upturnedpor tion 18 of the latch member is provided-"with a slot 1G and iscutaway at one endas indi cated reference numeral 41.

An expansible spring 42 18 mounted on the pin 37 to exert-ayieldingtensi'on againstthe upturned portion 18 of'the latch member andagainst the dogging member by pressing the collar 38 against t asdogging memberforcing it in close contact with the side3,-t'l-ierebypreventing play of the parts and holding same in position;The expansible-springlitin exerting a tension against the upturnedportion 18 a of the latch membera-lso forces and holds the"- latch ofthe latch mechanism in normal yield-- 7 ing operative position as shownin Figure 1 "tension' of the spring 12 to inoperative'posi tion as shownin dotted lines in Figure 1.

When the latch member is moved to unfastened position against thetension of the spring 42 the projecting portion .28'passes through theslot 10 andthe projectingpor tion 29 clears through theopening providedby cutting away apart of the upturned p01" tion 18 of the latch memberas shown at 41..

In Figure '2 the dogging memberis shown shifted or adjusted from itsnormal position as shown in Figurelyto a positionxto permit" theprojecting portions 28 and 29 to line up with the body of the upturnedportion 18 of the latch member-or to contact with the face thereof,thereby positively and constantly I maintaining the latch in non-movableposition.

While the dogging member is being adjusted to a positioninlin'e with theupturned po-r-" tion 18 of the latch member for constantly andpositively maintaining the latch in fixed position, the latch member isheld in its normal yielding operative position by the tension means andafter adjustment is held constantly and positively in fixed position asshown in Figure 2. V

When it is desired to maintain the latch in withdrawn positionpositively and constant ly, the latch member is actuatedagainst thetension of the spring 42 to the position shown in Figure 1 in dottedlines and Figure 7 in full lines and the dogging member while held insaid position is shifted or adjusted to per mit the flat portion 29 0fthe contact member 29 to en a e the end 29 of the unturned member 18,thereby fixing the latch positively and constantly in withdrawn positionas shown in Figure 7 in full lines.

The dogging mechanism as shown in the drawings is preferably applied toa latch mechanism constructed as-shown in the drawings. It is notintended however, to limit the dogging mechanism shown herein to itsassociation with the specific latch mechanism shown, as it is obviousthat the principle involved in the dogging mechanism described hereincan be applied and associated with other latch mechanisms, withoutdeparting from the principle of the invention.

twill be noted that the dogging member as constructed and applied to thelatch mechanism provides means of operating from the end or side of thebody containing the latch mechanism, leaving the top of the body free 7and unobstructed, to permit the operation of the latch mechanism withoutinterference.

I claim:

1. In a latch, a body, a latch member slidable in the body, means forsecuring the latch member in projected or retracted position relative tothe body, and spring means co: operating with said latch member and withsaid securing means and serving to normally project the latch memberrelative to the body and to hold the securing means against casualdisplacement.

2. In a latch, a body, a latch member slidable in the body and includinga latch nose and an inner outstanding wall, a dogging element slidableon the body to and from an operative position, said element havingspaced projections engaging said wall to prevent unlatching movement ofthe latch memher when the element is in operative position and the latchnose projectechone of said projections being formed to engage one edge,

of said well when the element is in operative position and the latchnose withdrawn to prevent latching movement of such latch.

member. v

3. In a latch, a body, a latching member including a latch nose and anoutstanding wall,

actuated, and a spring serving to normallyproject the latch member, saidspring bearing on the dogging element to prevent casual displacement ofthe latter.

4. A latch member including a body, a latch movable therein andincluding a latch nose and an outstanding wall, an operator for thelatch cooperating with the wall to withdraw the latch nose, a springcooperating with said wall to move the latch nose into projectedposition, and a dogging element slidable on the body and'having spacedprojections to be interposed into the path of said wall when the latchnose is projected to prevent movement of the latch member by theoperator, one of said projections having an onset portion to engage oneedge of said wall when the latch member is Withdrawn, to thereby preventmovement of the'latch member under the action of the spring.

5. In a'latch, a body, a latch member including a latch nose and anoutstanding wall movable in the body, an operator cooperating with thewallto withdraw the latch nose, a' spring cooperating with'the wall toproject cluding a latch nose and an outstanding wall movable in thebody, an operator cooperating with the wall to withdraw the latch nose,a

spring cooperating with the wall to-project.

the latch nose, a dogging element slidable on the body and adapted formanual operation to either of two positions, said spring bearing on thedogging element to preventcasual displacement thereof when in eitherposition, spaced projections carried by the dogging element adapted,when the nose is projected and the dogging element in operativeposition, to be interposed in the path of and prevent movement of saidwall, one of said projections being formed to engage with one edge ofsaid wall when the latch nose is withdrawn and the element is inoperative position to thereby hold the latch nose in inoperativeposition.

In testimony whereof I afiix my signature.

